Cervical cancer takes its greatest toll in the countries whose economies and health systems are poorest.
Women in those places are less likely than those in rich countries to get regular Pap tests to detect the cancers when it can be treated effectively.
Of the 275,000 women who die of cervical cancer each year, more than 85 percent, or at least 234,000, are in low-income countries.
But a vaccine that can prevent cervical cancer could go a long way toward lowering the risk in those less developed countries. Problem is, the shots are pretty expensive.